Global Patent Index - EP 0862069 A3

EP 0862069 A3 2000-05-24 - Optical fiber

Title (en)

Optical fiber

Title (de)

Optische Faser

Title (fr)

Fibre optique

Publication

EP 0862069 A3 (EN)

Application

EP 98250064 A

Priority

JP 4226097 A

Abstract (en)

[origin: EP0862069A2] An optical fiber includes a core, a first cladding, a second cladding, and a third cladding. The core has a refractive index n0. The first cladding is formed around the core and has a refractive index n1. The second cladding is formed around the first cladding and has a refractive index n2. The third cladding is formed around the second cladding and has a refractive index n3. The refractive indices have relationships n1 > n2 > n3 and n1 > n0. <IMAGE>

IPC 1-7 (main, further and additional classification)

G02B 6/22

IPC 8 full level (invention and additional information)

G02B 6/036 (2006.01)

CPC (invention and additional information)

G02B 6/03633 (2013.01); G02B 6/02019 (2013.01); G02B 6/02247 (2013.01); G02B 6/03611 (2013.01); G02B 6/02257 (2013.01); G02B 6/02271 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0862069 A2 19980902; EP 0862069 A3 20000524; EP 0862069 B1 20070411; DE 69837506 D1 20070524; DE 69837506 T2 20071227; US 5963700 A 19991005

INPADOC legal status


2010-04-30 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-04-30 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-01-29 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2009-11-27 [REG FR ST] NOTIFICATION OF LAPSE

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2009-10-28 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

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2008-05-30 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2008-03-19 [26N] NO OPPOSITION FILED

- Effective date: 20080114

2007-08-24 [ET] FR: TRANSLATION FILED

2007-05-24 [REF] CORRESPONDS TO:

- Document: DE 69837506 P 20070524

2007-04-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB

2007-04-11 [REG GB FG4D] EUROPEAN PATENT GRANTED

2007-01-10 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G02B 6/036 20060101AFI20061201BHEP

2001-04-25 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010309

2001-01-31 [AKX] PAYMENT OF DESIGNATION FEES

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2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-05-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2000-05-24 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 02B 6/22 A

1998-09-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980224

1998-09-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR GB

1998-09-02 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI